Some more "rules"

Don't Eat Food That Doesn't Rot - Michael Pollan's Food Rules

10 Catchy Food Rules
2. Don't eat anything your great-grandmother wouldn't recognise as food.
6. Avoid foods that contain more than five ingredients
13. Eat only foods that eventually will rot.
15. Get out of the supermarket whenever you can.
20. It's not food if it arrived through the window of your car.
21. It's not food if it's called by the same name in every language (Think Big Mac).
27. Eat animals that have themselves eaten well.
32. Don't overlook the oily little fishes.
36. Don't eat breakfast cereals that change the color of the milk.
39. Don't get your fuel from the same place your car does.